Outwitting is a skill that some people have mastered, but it's not for everyone. If you're looking for the opposite of outwit, then you might consider the following antonyms: overmatched, outmatched, and overpower. Overmatched implies that someone simply doesn't have the skills or abilities to beat the other person. Outmatched means that someone is simply not as good as their opponent in a particular area. Powerless suggests that someone does not have the power, influence, or ability to overcome someone else's strength. These antonyms can be useful when you need to discuss situations where people were not able to outsmart each other or overcome their adversaries.